The son of [a] rocket scientist thinks he is close to perfecting...a machine that might make cheap, clean electricity from the ocean. I believe it'll change the world," said second-generation inventor Tom Woodbridge, a NASA engineer. In theory, the idea is simple. Spinning copper wires through a stable magnetic field makes electricity - lots of electrons jumping off the magnetic field and zooming through a conductive metal. And since the ocean waves are already moving, why not cobble together a machine to harness that energy? Think Pogo Stick inside a floating drum. The rocking motion of the waves pushes a long cylinder of magnets up and down a copper coil. His small model generates 10 watts of power in a 6-inch wave chop. A full-scale version could generate 160 kilowatts. That one buoy is enough to power 160 houses, following the rule of thumb that the average U.S. home uses about 1,000 kilowatts of electricity each month.